A: There is also the jet size stamped into the side and numbers cast into the casing if you know where to look! From: Ken Ames <amesk@xxxxxxxxxxxxxxxxxxxxxx> To: mail@xxxxxxxxxxxx Subject: Re: Re 1972 Ford carb/it's the rules man I realize that. As the carbs are praticaly identical, if they're looking for a correct tag, you can use one. As the carbs are so nearly the same it won't make any difference to the performance if you have a 73 carb and a 72 tag. How would one tell a 73 carb from a 72 without the tag? Fer instance. :) Ken Ames